fsuipc.cs

using System;
using System.Collections.Generic;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using FSUIPC;

namespace FSUIPCClientExample_CSharp
{
    public partial class Form1 : Form
    {
        // Private Static Members
        private static readonly string AppTitle = "FSUIPCClientApplication_CSharp";

        // Create the Offsets we're interested in for this Application
        private Offset<int> airspeed = new Offset<int>(0x02BC);  // Basic integer read example
        private Offset<int> avionics = new Offset<int>(0x2E80);  // Basic integer read and write example
        private Offset<byte[]> fsLocalDateTime = new Offset<byte[]>(0x0238, 10); // Example of reading an arbitary set of bytes. 
        private Offset<string> aircraftType = new Offset<string>("AircraftInfo", 0x3160, 24); // Example of string and use of a group
        private Offset<BitArray> lights = new Offset<BitArray>(0x0D0C, 2); // Example of BitArray used to manage a bit field type offset.
        private Offset<Double> compass = new Offset<double>(0x02CC); // Example for disconnecting/reconnecting
        private Offset<short> pause = new Offset<short>(0x0262, true); // Example of a write only offset.
        private Offset<short> com2bcd = new Offset<short>(0x3118); // Example of reading a frequency coded in Binary Coded Decimal
        private Offset<long> playerLatitude = new Offset<long>(0x0560); // Offset for Lat/Lon features
        private Offset<long> playerLongitude = new Offset<long>(0x0568); // Offset for Lat/Lon features
        private Offset<short> onGround = new Offset<short>(0x0366); // Offset for Lat/Lon features
        private Offset<short> magVar = new Offset<short>(0x02A0); // Offset for Lat/Lon features
        private Offset<uint> playerHeadingTrue = new Offset<uint>(0x0580); // Offset for moving the plane
        private Offset<long> playerAltitude = new Offset<long>(0x0570); // Offset for moving the plane
        private Offset<short> slewMode = new Offset<short>(0x05DC, true); // Offset for moving the plane
        private Offset<int> sendControl = new Offset<int>(0x3110, true); // Offset for moving the plane

        private readonly int REFRESH_SCENERY = 65562; // Control number to refresh the scenery

        private FsLatLonPoint EGLL; // Holds the position of London Heathrow (EGLL)
        private FsLatLonQuadrilateral runwayQuad; // defines the four corners of the runway (27L at EGLL)
        private AITrafficServices AI; // Holds a reference to the AI Traffic Services object

        public Form1()
        {
            InitializeComponent();
            // Setup the example data for London Heathrow
            // 1. The position
            //    This shows an FsLongitude and FsLatitude class made from the Degrees/Minutes/Seconds constructor.
            //    The Timer1_Tick() method shows a different contructor (using the RAW FSUIPC values).
            FsLatitude lat = new FsLatitude(51, 28, 39.0d); 
            FsLongitude lon = new FsLongitude(0, -27, -41.0d); 
            EGLL = new FsLatLonPoint(lat, lon);
            // Now define the Quadrangle for the 27L (09R) runway.
            // We could just define the four corner Lat/Lon points if we knew them.
            // In this example however we're using the helper function to calculate the points
            // from the runway information.  This is the kind of info you can find in the output files
            // from Pete Dowson's MakeRunways program.
            FsLatitude rwyThresholdLat = new FsLatitude(51.464943d);
            FsLongitude rwyThresholdLon = new FsLongitude(-0.434046d);
            double rwyMagHeading = 272.7d;
            double rwyMagVariation = -3d;
            double rwyLength = 11978d;
            double rwyWidth = 164d;
            // Call the static helper on the FsLatLonQuarangle class to generate the Quadrangle for this runway...
            FsLatLonPoint thresholdCentre = new FsLatLonPoint(rwyThresholdLat, rwyThresholdLon);
            double trueHeading = rwyMagHeading + rwyMagVariation;
            runwayQuad = FsLatLonQuadrilateral.ForRunway(thresholdCentre, trueHeading, rwyWidth, rwyLength);
            // Set the default value for the distance units and AI Radar range
            this.cbxDistanceUnits.Text = "Nautical Miles";
            this.cbxRadarRange.Text = "50";
        }

        // Application started so try to open the connection to FSUIPC
        private void Form1_Load(object sender, EventArgs e)
        {
            openFSUIPC();
        }

        // User pressed connect button so try again...
        private void btnStart_Click(object sender, EventArgs e)
        {
            openFSUIPC();
        }

        // Opens FSUIPC - if all goes well then starts the 
        // timer to drive start the main application cycle.
        // If can't open display the error message.
        private void openFSUIPC()
        {
            try
            {
                // Attempt to open a connection to FSUIPC (running on any version of Flight Sim)
                FSUIPCConnection.Open();
                // Opened OK so disable the Connect button
                this.btnStart.Enabled = false;
                this.chkEnableAIRadar.Enabled = true;
                // Start the timer ticking to drive the rest of the application
                this.timer1.Interval = 200;
                this.timer1.Enabled = true;
                // Set the AI object
                AI = FSUIPCConnection.AITrafficServices;
            }
            catch (Exception ex)
            {
                // Badness occurred - show the error message
                MessageBox.Show(ex.Message, AppTitle, MessageBoxButtons.OK, MessageBoxIcon.Error);
                FSUIPCConnection.Close();
                Debug.WriteLine(ex.Message);
            }
        }

        // Application is unloading so call close to cleanup the 
        // UNMANAGED memory used by FSUIPC. 
        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            FSUIPCConnection.Close();
        }

        // The timer handles the real-time updating of the Form.
        // The default group (ie, no group specified) is 
        // Processed and every Offset in the default group is updated.
        private void timer1_Tick(object sender, EventArgs e)
        {
            // Process the default group
            try
            {
                FSUIPCConnection.Process();


                // IAS - Simple integer returned so just divide as per the 
                // FSUIPC documentation for this offset and display the result.
                double airpeedKnots = ((double)airspeed.Value / 128d);
                this.txtIAS.Text = airpeedKnots.ToString("f1");


                // Avionics Master Switch
                this.chkAvionics.Checked = (avionics.Value > 0);  // 0 = Off, 1 = On.


                // Advanced Concept: Reading Raw Blocks of Data.
                // FS Local Date and Time
                // This demonstrates getting back an arbitrary number of bytes from an offset.
                // Here we're getting 10 back from Offset 0x0328 which contain info about the 
                // Local date and time in FS.
                // Because it's returned as a byte array we need to handle everything ourselves...
                // 1. Year (starts at Byte 8) for 2 bytes. (Int16)
                //    Use the BitConverter class to get it into a native Int16 variable
                short year = BitConverter.ToInt16(fsLocalDateTime.Value, 8);
                //    You could also do it manually if you know about such things...
                //    short year = (short)(fsLocalDateTime.Value[8] + (fsLocalDateTime.Value[9] * 0x100));
                // 2. Make new datetime with the the time value at 01/01 of the year...
                //    Time - in bytes 0,1 and 2. (Hour, Minute, Second):
                DateTime fsTime = new DateTime(year, 1, 1, fsLocalDateTime.Value[0], fsLocalDateTime.Value[1], fsLocalDateTime.Value[2]);
                // 3. Get the Day of the Year back (not given as Day and Month) 
                //    and add this on to the Jan 1 date we created above 
                //    to give the final date:
                short dayNo = BitConverter.ToInt16(fsLocalDateTime.Value, 6);
                fsTime = fsTime.Add(new TimeSpan(dayNo - 1, 0, 0, 0));
                // Now print it out
                this.txtFSDateTime.Text = fsTime.ToString("dddd, MMMM dd yyyy hh:mm:ss");


                // Lights
                // This demonstrates using the BitArray type to handle
                // a bit field type offset.  The lights are a 2 byte (16bit) bit field 
                // starting in offset 0D0C.
                // To make the code clearer and easier to write in the first
                // place - I created a LightType Enum (bottom of this file).
                // You could of course just use the literal values 0-9 if you prefer.
                // For the first three, I've put alternative lines in comments
                // that use a literal indexer instead of the enum.
                // Update each checkbox according to the relevent bit in the BitArray...
                this.chkBeacon.Checked = lights.Value[(int)LightType.Beacon];
                //this.chkBeacon.Checked = lights.Value[1];
                this.chkCabin.Checked = lights.Value[(int)LightType.Cabin];
                //this.chkCabin.Checked = lights.Value[9];
                this.chkInstuments.Checked = lights.Value[(int)LightType.Instruments];
                //this.chkInstuments.Checked = lights.Value[5];
                this.chkLanding.Checked = lights.Value[(int)LightType.Landing];
                this.chkLogo.Checked = lights.Value[(int)LightType.Logo];
                this.chkNavigation.Checked = lights.Value[(int)LightType.Navigation];
                this.chkRecognition.Checked = lights.Value[(int)LightType.Recognition];
                this.chkStrobes.Checked = lights.Value[(int)LightType.Strobes];
                this.chkTaxi.Checked = lights.Value[(int)LightType.Taxi];
                this.chkWing.Checked = lights.Value[(int)LightType.Wing];

                // Compass heading
                // Used to demonstrate disconnecting and reconnecting an Offset.
                // We display the data in the field regardless of whether 
                // it's been updated or not.
                this.txtCompass.Text = compass.Value.ToString("F2");

                // COM2 frequency
                // Shows decoding a DCD frequency to a string
                // a. Convert to a string in Hexadecimal format
                string com2String = com2bcd.Value.ToString("X");
                // b. Add the assumed '1' and insert the decimal point
                com2String = "1" + com2String.Substring(0, 2) + "." + com2String.Substring(2, 2);
                this.txtCOM2.Text = com2String;

                // Latitude and Longitude 
                // Shows using the FsLongitude and FsLatitude classes to easily work with Lat/Lon
                // Create new instances of FsLongitude and FsLatitude using the raw 8-Byte data from the FSUIPC Offsets
                FsLongitude lon = new FsLongitude(playerLongitude.Value);
                FsLatitude lat = new FsLatitude(playerLatitude.Value);
                // Use the ToString() method to output in human readable form:
                // (note that many other properties are avilable to get the Lat/Lon in different numerical formats)
                this.txtLatitude.Text = lat.ToString();
                this.txtLongitude.Text = lon.ToString();

                // Using fsLonLatPoint to calculate distance and bearing between two points
                // First get the point for the current plane position
                FsLatLonPoint currentPosition = new FsLatLonPoint(lat, lon);
                // Get the distance between here and EGLL
                double distance = 0;
                switch (this.cbxDistanceUnits.Text)
                {
                    case "Nautical Miles":
                        distance = currentPosition.DistanceFromInNauticalMiles(EGLL);
                        break;
                    case "Statute Miles":
                        distance = currentPosition.DistanceFromInFeet(EGLL) / 5280d;
                        break;
                    case "Kilometres":
                        distance = currentPosition.DistanceFromInMetres(EGLL) / 1000d;
                        break;
                }
                // Write the distance to the text box formatting to 2 decimal places
                this.txtDistance.Text = distance.ToString("N2");
                // Get the bearing (True) 
                double bearing = currentPosition.BearingTo(EGLL);
                // Get the magnetic variation
                double variation = (double)magVar.Value * 360d / 65536d;
                // convert bearing to magnetic bearing by subtracting the magnetic variation
                bearing -= variation;
                // Display the bearing in whole numbers and tag on a degree symbol
                this.txtBearing.Text = bearing.ToString("F0") + "\u00B0";

                // Now check if the player is on the runway:
                // Test is the plane is on the ground and if the current position is in the bounds of
                // the runway Quadrangle we calculated in the constructor above.
                chkPlaneOnRunway.Checked = (this.onGround.Value == 1 && runwayQuad.ContainsPoint(currentPosition));
            }
            catch (FSUIPCException ex)
            {
                if (ex.FSUIPCErrorCode == FSUIPCError.FSUIPC_ERR_SENDMSG)
                {
                    // Send message error - connection to FSUIPC lost.
                    // Show message, disable the main timer loop and relight the 
                    // connection button:
                    // Also Close the broken connection.
                    this.timer1.Enabled = false;
                    this.btnStart.Enabled = true;
                    this.chkEnableAIRadar.Enabled = false;
                    this.chkEnableAIRadar.Checked = false;
                    this.AIRadarTimer.Enabled = false;
                    FSUIPCConnection.Close();
                    MessageBox.Show("The connection to Flight Sim has been lost.", AppTitle, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                }
                else
                {
                    // not the disonnect error so some other baddness occured.
                    // just rethrow to halt the application
                    throw ex;
                }
            }
            catch (Exception)
            {
                // Sometime when the connection is lost, bad data gets returned 
                // and causes problems with some of the other lines.  
                // This catch block just makes sure the user doesn't see any
                // other Exceptions apart from FSUIPCExceptions.
            }
        }

        private void CheckPlayerIsOnRunway()
        {
            FsLongitude lon = new FsLongitude(playerLongitude.Value);
            FsLatitude lat = new FsLatitude(playerLatitude.Value);
            // Get the point for the current plane position
            FsLatLonPoint currentPosition = new FsLatLonPoint(lat, lon);

            // Now define the Quadrangle for the 27L (09R) runway.
            // We could just define the four corner Lat/Lon points if we knew them.
            // In this example however we're using the helper function to calculate the points
            // from the runway information.  This is the kind of info you can find in the output files
            // from Pete Dowson's MakeRunways program.
            FsLatitude rwyThresholdLat = new FsLatitude(51.464943d);
            FsLongitude rwyThresholdLon = new FsLongitude(-0.434046d);
            double rwyMagHeading = 272.7d;
            double rwyMagVariation = -3d;
            double rwyLength = 11978d;
            double rwyWidth = 164d;
            
            // Call the static helper on the FsLatLonQuarangle class to generate the Quadrangle for this runway...
            FsLatLonPoint thresholdCentre = new FsLatLonPoint(rwyThresholdLat, rwyThresholdLon);
            double trueHeading = rwyMagHeading + rwyMagVariation;
            runwayQuad = FsLatLonQuadrilateral.ForRunway(thresholdCentre, trueHeading, rwyWidth, rwyLength);
            
            // Now check if the player is on the runway:
            // Test is the plane is on the ground and if the current position is in the bounds of
            // the runway Quadrangle we calculated in the constructor above.
            if (this.onGround.Value == 1 && runwayQuad.ContainsPoint(currentPosition))
            {
                // Player is on the runway
                // Do Stuff
            }
        }

        // Demonstrates the Grouping facility and also returning a string.
        // The AircraftType Offset is in a Group called "AircraftInfo".
        // With the Group system you can gain control over which 
        // Offsets are processed.
        private void btnGetAircraftType_Click(object sender, EventArgs e)
        {
            // Aircraft type is in the "AircraftInfo" data group so we only want to proccess that here.
            try
            {
                FSUIPCConnection.Process("AircraftInfo");
                // OK so display the string
                // With strings the DLL automatically handles the 
                // ASCII/Unicode conversion and deals with the 
                // zero terminators.
                this.txtAircraftType.Text = aircraftType.Value;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, AppTitle, MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }


        // Next few eventhandlers deal with writing the lights.
        // Again we use the BitArray to manage the individual bits.
        // I've also used the LightType enum again for the bit numbers, although
        // that's not to everyone's taste.  Some alternative lines using literal index 
        // numbers are included as comments for the first two.
        private void chkNavigation_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Navigation] = this.chkNavigation.Checked;
            //this.lights.Value[0] = this.chkNavigation.Checked;
        }

        private void chkBeacon_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Beacon] = this.chkBeacon.Checked;
            //this.lights.Value[1] = this.chkBeacon.Checked;
        }

        private void chkLanding_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Landing] = this.chkLanding.Checked;
        }

        private void chkTaxi_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Taxi] = this.chkTaxi.Checked;
        }

        private void chkStrobes_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Strobes] = this.chkStrobes.Checked;
        }

        private void chkInstuments_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Instruments] = this.chkInstuments.Checked;
        }

        private void chkRecognition_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Recognition] = this.chkRecognition.Checked;
        }

        private void chkWing_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Wing] = this.chkWing.Checked;
        }

        private void chkLogo_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Logo] = this.chkLogo.Checked;
        }

        private void chkCabin_CheckedChanged(object sender, EventArgs e)
        {
            this.lights.Value[(int)LightType.Cabin] = this.chkCabin.Checked;
        }

        // Demonstrates a simple 'write' to an Offset.
        // To send a value to FSUIPC, just change the Value property.
        // The new data will be written during the next Process().
        private void chkAvionics_CheckedChanged(object sender, EventArgs e)
        {
            this.avionics.Value = chkAvionics.Checked ? 1 : 0;
        }

        // This demonstrates disconnecting an individual Offset.
        // After it's disconnected it doesn't get updated from FSUIPC
        // and changed to the value of this Offset do not get written
        // when Process() is called.
        private void btnDisconnect_Click(object sender, EventArgs e)
        {
            // Disconnect immediatley.
            this.compass.Disconnect();
        }

        // Same as disconnect, except the disconnect happens after 
        // the next Process.  So one more read/write is done and then
        // the Offset is disconnected.
        private void btnDisconnectAfterNext_Click(object sender, EventArgs e)
        {
            // Diconnect after the next process.
            this.compass.Disconnect(true);
        }

        // This demonstrates reconnecting an Offset.  It's value 
        // will be read/written during the subsequent Process()
        // calls.
        private void btnReconnect_Click(object sender, EventArgs e)
        {
            // Reconnect
            this.compass.Reconnect();
        }

        // Same as reconnect except the the Offset will be disconnected
        // again after the next Process() call.
        private void btnReconnectOnce_Click(object sender, EventArgs e)
        {
            // Reconnect, but only for one Process().  
            // The Offset is then disconnected again.
            this.compass.Reconnect(true);
        }

        // The pause Offset is Write only.  It's value is never updated from 
        // FSUIPC.  When it's value changes the new value is written
        // to FSUIPC during the next Process().
        private void chkPause_CheckedChanged(object sender, EventArgs e)
        {
            pause.Value = (short)(this.chkPause.Checked ? 1 : 0);
        }

        private enum LightType
        {
            Navigation,
            Beacon,
            Landing,
            Taxi,
            Strobes,
            Instruments,
            Recognition,
            Wing,
            Logo,
            Cabin
        }

        private void chkEnableAIRadar_CheckedChanged(object sender, EventArgs e)
        {
            // Turn on/off the radar timer to update the radar info  (runs every second)
            this.AIRadarTimer.Enabled = this.chkEnableAIRadar.Checked;
            // Force the panel to redraw now rather than wait one second
            this.pnlAIRadar.Invalidate();
        }

        private void AIRadarTimer_Tick(object sender, EventArgs e)
        {
            // Every second we update the Ground and Airborne AI trafic info
            AI.RefreshAITrafficInformation(this.chkShowGroundAI.Checked, this.chkShowAirborneAI.Checked);
            // Apply a filter according to the range set by the user
            // Filtering ground and airborne traffic, no bearing filter (include from 0-360)
            // No altitude filter (passing nulls)
            // Range as set by the combo box.
            AI.ApplyFilter(true, true, 0, 360, null, null, double.Parse(this.cbxRadarRange.Text));
            // Invalidate the radar panel so it redraws.
            this.pnlAIRadar.Invalidate();
        }

        private void pnlAIRadar_Paint(object sender, PaintEventArgs e)
        {
            // This gets called whenever the panel needs to draw itself.
            if (this.chkEnableAIRadar.Checked)
            {
                // First Clear the panel and make a black background
                e.Graphics.Clear(Color.Black);
                // Start by working out the centre of the radar and draw the centre cross
                Point centre = new Point(this.pnlAIRadar.ClientSize.Width / 2, this.pnlAIRadar.ClientSize.Height / 2);
                e.Graphics.DrawLine(Pens.White, centre.X - 4, centre.Y, centre.X + 4, centre.Y);
                e.Graphics.DrawLine(Pens.White, centre.X, centre.Y - 4, centre.X, centre.Y + 4);
                double range = double.Parse(this.cbxRadarRange.Text);
                // work out the scale using the range and the smallest size of the panel
                double scale = range / (double)(this.pnlAIRadar.ClientSize.Width < this.pnlAIRadar.ClientSize.Height ? this.pnlAIRadar.ClientSize.Width : this.pnlAIRadar.ClientSize.Height) * 2d;
                // Go through each plane and draw it on the radar
                // Note: We are using the seperate collections for the ground and airborne
                // There is a collection of all AI traffic called 'AllTraffic' which can be used if
                // you do not want to deal with these seperatley.
                // First, draw the ground AI if required
                if (this.chkShowGroundAI.Checked)
                {
                    // Loop through the collection of plane objects in the GroundTraffic collection.
                    foreach (AIPlaneInfo plane in AI.GroundTraffic)
                    {
                        // Here we just pass the planeInfo off to the draw routine.
                        // There is quite a lot of information available in the AIPlaneInfo object.
                        // See the reference manual or Intellisense for details.
                        drawTarget(e.Graphics, scale, centre, plane);
                    }
                }
                // Next, draw the Airborne AI if required
                if (this.chkShowAirborneAI.Checked)
                {
                    // Loop through the collection of plane objects in the GroundTraffic collection.
                    foreach (AIPlaneInfo plane in AI.AirbourneTraffic)
                    {
                        drawTarget(e.Graphics, scale, centre, plane);
                    }
                }
            }
            else
            {
                // Radar turned off so just clear it with white
                e.Graphics.Clear(Color.White);
            }
        }

        private void drawTarget(Graphics graphics, double scale, Point centre, AIPlaneInfo plane)
        {
            // We are going to use some of the info from the plane object to draw the target.
            // Lots more info is avilable for other application.  
            // See the reference manual or Intellisense for details.
            // Work out the range of the target in pixels by multiplying by the scale
            double distancePixels = plane.DistanceNM / scale;
            // Work out the position from the centre using this distance and the bearing
            double dx = Math.Cos(degreeToRadian(plane.BearingTo)) * distancePixels;
            double dy = Math.Sin(degreeToRadian(plane.BearingTo)) * distancePixels;
            PointF target = new PointF((float)centre.X + (float)dx, (float)centre.Y + (float)dy);
            // Draw the target circle around this point oriented to the plane's heading 
            graphics.DrawEllipse(Pens.LightGreen, target.X - 4f, target.Y - 4f, 8f, 8f);
            // Draw a line from the circle to indicate heading
            double tailHeading = 180d + plane.HeadingDegrees;
            dx = Math.Cos(degreeToRadian(tailHeading)) * 12;
            dy = Math.Sin(degreeToRadian(tailHeading)) * 12;
            PointF tailEnd = new PointF(target.X + (float)dx, target.Y + (float)dy);
            graphics.DrawLine(new Pen(new LinearGradientBrush(target, tailEnd, Color.LightGreen, Color.DarkGreen)), target, tailEnd);
            // Work out the position of the data block
            PointF dataBlock = new PointF(target.X + 20, target.Y - 20);
            // Draw the line to the datablock
            graphics.DrawLine(Pens.LightGreen, new PointF(target.X + 5, target.Y - 5), new PointF(dataBlock.X - 5, dataBlock.Y + 7));
            // Draw the data block
            // Line 1 - the Callsign
            graphics.DrawString(plane.ATCIdentifier, this.pnlAIRadar.Font, Brushes.LightGreen, dataBlock);
            // Line 2 - the Altitude (hundreds of feet) and speed
            string line2 = "";
            line2 += ((int)(plane.AltitudeFeet / 100d)).ToString("d3");
            // Put a +,- or = depending on if the plane is decending, climbing or level
            if (plane.VirticalSpeedFeet < 0)
            {
                line2 += "-";
            }
            else if (plane.VirticalSpeedFeet > 0)
            {
                line2 += "+";
            }
            else
            {
                line2 += "=";
            }
            graphics.DrawString(line2, this.pnlAIRadar.Font, Brushes.LightGreen, new PointF(dataBlock.X, dataBlock.Y + 12));
            // Line 3 - origin, destination and assigned runway
            graphics.DrawString(plane.DepartureICAO + "->" + plane.DestinationICAO + " " + plane.RunwayAssigned.ToString(), this.pnlAIRadar.Font, Brushes.LightGreen, new PointF(dataBlock.X, dataBlock.Y + 24));
        }

        private double degreeToRadian(double angle)
        {
            return Math.PI * angle / 180.0;
        }

        private void btnMoveToEGLL_Click(object sender, EventArgs e)
        {
            // Suspend the timers
            if (this.timer1.Enabled)
            {
                this.timer1.Enabled = false;
                if (this.chkEnableAIRadar.Checked)
                {
                    this.AIRadarTimer.Enabled = false;
                }
                // Put the sim into Slew mode
                slewMode.Value = 1;
                FSUIPCConnection.Process();
                // Make a new point representing the centre of the threshold for 27L
                FsLatitude lat = new FsLatitude(51.464943d);
                FsLongitude lon = new FsLongitude(-0.434046d);
                FsLatLonPoint newPos = new FsLatLonPoint(lat, lon);
                // Now move this point 150 metres up the runway
                // Use one of the OffsetBy methods of the FsLatLonPoint class  
                double rwyTrueHeading =  269.7d;
                newPos = newPos.OffsetByMetres(rwyTrueHeading, 150);
                // Set the new position
                playerLatitude.Value = newPos.Latitude.ToFSUnits8();
                playerLongitude.Value = newPos.Longitude.ToFSUnits8();
                // set the heading and altitude
                playerAltitude.Value = 0;
                playerHeadingTrue.Value = (uint)(rwyTrueHeading * (65536d * 65536d) / 360d);
                FSUIPCConnection.Process();
                // Turn off the slew mode
                slewMode.Value = 0;
                FSUIPCConnection.Process();
                // Refresh the scenery
                sendControl.Value = REFRESH_SCENERY;
                FSUIPCConnection.Process();
                // Reenable the timers
                this.timer1.Enabled = true;
                this.AIRadarTimer.Enabled = this.chkEnableAIRadar.Checked;
            }
        }
    }

    // A double buffered panel used for the radar scope.
    // The normal panel that .NET supplies doesn't use double buffering 
    // and therefore suffers from massive flickering issues.
    public class DoubleBufferPanel : Panel
    {
        public DoubleBufferPanel()
        {
            // Set the value of the double-buffering style bits to true.
            this.SetStyle(ControlStyles.DoubleBuffer |
            ControlStyles.UserPaint |
            ControlStyles.AllPaintingInWmPaint,
            true);

            this.UpdateStyles();
        }
    }
}